Question

如何从控制器访问ngRepeat循环内的给定记录，最终用于表单验证？

我有以下表格可以让用户动态添加/删除记录：

<table class="table table-condensed span12" id="tableParticipants">
  <!-- snip -->
  <tbody>
    <tr ng-repeat="person in people">
      <td><input type="text" pattern="[0-9]*" data-provide="typeahead" placeholder="8675309" ng-model="person.empid"></td>
      <td><input type="text" data-provide="typeahead"  placeholder="Firstname Lastname" ng-model="person.name"></td>
      <td><input type="text" placeholder="Title" ng-model="person.title"></td>
      <td style="text-align: center"><i class="icon-remove" ng-click="removeParticipant()"></i></td>
    </tr>
  </tbody>
</table>

在提交表单时，我需要确保员工ID有效，否则我将收到数据库错误。所以，当我完成循环时：

$scope.people.forEach(function(element, index, array)
{
  if ($element['empid'] == BAD)
  {
    // set corredponding ngRepeat row to error
  }
}

如何访问特定记录的给定行？

Answer 1

您应该可以执行以下操作。将css类名添加到数组项和/或错误消息。其余的应由Angular处理，它将更新。您可以选择显示/隐藏消息，添加类等等。

<tr ng-repeat="person in people" ng-class="person.error">
 <td><input type="text" pattern="[0-9]*" data-provide="typeahead" placeholder="8675309" ng-model="person.empid"></td>
  <td><input type="text" data-provide="typeahead"  placeholder="Firstname Lastname" ng-model="person.name"></td>
  <td><input type="text" placeholder="Title" ng-model="person.title"></td>
  <td style="text-align: center"><i class="icon-remove" ng-click="removeParticipant()"></i> <span>{{person.errorMessage}}</td>
</tr>

if ($element['empid'] == BAD)
{
  $element['errorMessage'] = 'Invalid Id';  // could bind or show a span/depends.
  $element['error'] = 'error';  // set to whatever class you want to use.
}

从ng重复访问元素

1 个答案: